From: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
[ Upstream commit bcde519e8c325f3cc1fcf443eb6466e6bb3a3aca ]
ARM64 depends on the macro __AARCH64EB__ being defined or not
to correctly select or define endian-specific macros, structures
or pieces of code.
This macro is predefined by the compiler but sparse knows nothing
about it and thus may pre-process files differently from what
gcc would.
Fix this by passing '-D__AARCH64EL__' or '-D__AARCH64EB__' to
sparse depending of the endianness of the kernel, like defined
by GCC.
Note: In most case it won't change anything since most arm64 use
little-endian (but an allyesconfig would use big-endian!).
CC: Catalin Marinas <catalin.marinas@xxxxxxx>
CC: Will Deacon <will.deacon@xxxxxxx>
CC: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
arch/arm64/Makefile | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index bc66f4b6a1cb..b0babc09577d 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -48,11 +48,13 @@ KBUILD_AFLAGS += $(lseinstr)
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
+CHECKFLAGS += -D__AARCH64EB__
AS += -EB
LD += -EB
UTS_MACHINE := aarch64_be
else
KBUILD_CPPFLAGS += -mlittle-endian
+CHECKFLAGS += -D__AARCH64EL__
AS += -EL
LD += -EL
UTS_MACHINE := aarch64
--
2.15.1